#!/bin/sh
#
# This script prints out full command line that can be used to
# execute ARM binary under qemu gdbserver.  Usage is limited to
# armel binaries where cpu transparency is set to qemu-arm and
# mapping mode is emulate.
#
# For example if one wants to debug standalone gui binary (maemopad)
# run inside emulation mode:
#     run-standalone.sh `sb2-qemu-gdbserver-prepare` ./maemopad
# and qemu should start listening gdbserver port.
#
# Copyright (C) 2008 Nokia Corporation.
# Licensed under GPL version 2
#
prog="$0"
progbase=`basename $0`

usage()
{
	cat <<EOF
Usage: $progbase [OPTION] COMMAND

Options:
   -p PORT  sets gdbserver port to PORT (default 1234)
   -h       displays this help text

Prints out full command line that can be used to start ARM
binary under remote qemu gdbserver.
EOF
	exit 1
}

error_not_inside_sb2()
{
	echo "SB2: $progbase: This program can only be used from inside"
	echo "the scratchbox 2'ed environment"
	exit 1
}

if [ -z "$SBOX_SESSION_DIR" ]; then
	error_not_inside_sb2
fi

. $SBOX_SESSION_DIR/sb2-session.conf

#
# Checks whether we are in emulation mode and cpu transparency
# is set to sb2-qemu-arm.  Returns true (0) when environment
# is correct, false otherwise.
#
check_mode_and_cpu_transparency()
{
	local transp

	if [ "$sbox_mapmode" != "emulate" ]; then
		return 1
	fi
	transp=$sbox_cputransparency_cmd
	if [ -z "$transp" ]; then
		return 1
	fi
	/usr/bin/expr $transp : '.*-qemu-arm$' > /dev/null 2>&1
	return $?
}

check_mode_and_cpu_transparency
if [ $? -ne 0 ]; then
	echo "SB2: $progbase: This script can be only used inside"
	echo "emulation mode where cpu transparency is set to sb2-qemu-arm"
	exit 1
fi

port=1234
while getopts hp: p; do
	case $p in
	p)
		port="$OPTARG"
		;;
	-)
		break
		;;
	?)
		usage
		;;
	esac
done

# consume parameters
shift $((OPTIND - 1))

if [ $# -lt 1 ]; then
	usage
fi

# validate that target binary really exists, otherwise sb2-show fails
target="$1"
if [ ! -e $target ]; then
	echo "SB2: $progbase: Target binary $target doesn't exist"
	exit 1
fi

#
# Run sb2-show and prepare output so that it is suitable for
# remote debugging.
#
exec /usr/bin/sb2-show qemu-debug-exec -g $port $@
